+ Width = (Width + 3) / 4;
+ Height = (Height + 3) / 4;
+ break;
+
+ case D3DFMT_ATI1N:
+ case D3DFMT_ATI2N:
+ /*
+ * Because these are unsupported formats, RowPitch is not set to the
+ * number of bytes between row of blocks, but instead in such way that
+ * Height * RowPitch will match the expected size.
+ */